Question about Cars & Trucks
Battery will not hold charge and the voltage meter will not register charge of discharge
Is the alternator putting out a charging current when running? Measured at alternator then at battery. If no at alternator, replace alternator if high mileage, if low mileage replace regulator. The part the harness plugs into.
If yes at alternator and no at battery, check for continuity across ammeter and check the voltmeter for a short. The ammeter should read essentially zero ohms and the voltmeter should read about 15,000 to 40,000 ohms when measured with an analog ohm meter.
If those check okay, check for a wiring fault or a blown fuse on the power distribution block or a broken fusible link. Fusible links can be checked by gentle tension on them, those that have failed will pull apart.
Posted on Jan 18, 2012
don't look past the fact that sometimes new parts are defective off the shelf.. even when tested off vehicle, they can be bad I have run into that before..
Posted on Jun 11, 2010
SOURCE: Rapid battery discharge
Battery discharge when connected is a regular fault when there are too many electronics connected some of them directly active even when the main switch is off. these can be the clock, the stereo system, the power amp, the remote controller, the auto lock, auto start or any other accessories. You will need to carefully go about to identify with the aid of a good ammeter. Disconnect the main battery terminal and recconnect it in series with the ammeter. If there is a leak in the system it will show up as a good reading . Usually a reading less than few milli amps can be ignored but if the current drain is high then carefully disconnect each of the acessories which is present in the car either byt disconnection of fuse or main wire to device. Once the reading drops to a very low level on discoonection of a particular device, you have the culprit in hand. Keeping this circuit disconnected and check out after two days but your batterry must be in trim condition ( not drained earlier). Hope this helps you out. Good day
Posted on Jul 19, 2010
sounds as though you have a bad alternator or a loose alternator belt and the battery is not being charged. while the car is running - check the voltage from the alternator and make sure it is about 13.4 volts DC.
Posted on Jan 03, 2011
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